Roll spindle



Sept y17 1940- c. A. MElsEl.

RLL SPINDLE Filed Feb. 14, 1959 -Q .NWNQW om Patented Sept. l17, i940 y l UNITED STATES PATENT oFFicE ROLL SPINDLE Charles A. Meisel, Milton, Mass., assigner to Meisel Press Manufacturing Company, Boston, Mass., acorporation of Massachusetts Application February 14, 1939, serialNo. 256,295

4 claims. (ci. 242-72) This invention relates to spindles for rolls and preferably curved to the surface of a cylinder, as the object is to provide a support for a roll or best seen in Fig. 3. The bases 24, as indicated by for the core on which a roll of paper or fabric the dotted lines in Fig. l, are oblong and the bases is usually wound adapted to engage the same of adjacent plugs present their edges closely to- 5 with a uniform grip in accurately centered posigether so that the cooperation of the bases of 5 tion. My invention will be Well understood by adjacent plugs serves to properly position the reference to the following description taken in same with the projecting portions in proper orienconnection with the accompanying drawing, tation to dispose the curved dimension thereof in wherein I have shown by way of example one ilthe circumferential direction rather than in the lustrative embodiment of my invention as applied axial direction. 10

tov a rewinding roll for a paper web and wherein: The plugs may be thrust outwardly into engage- Fig. 1 is a broken view partly in elevation and ment with the core 8 by means of an inflatable partly in central vertical section showing a roll tube 26 encircling the inner shell and bound spindle illustrative of my invention; thereto at its inner ends by the bands 28. Air

Fig. 2 is a fragmentary View in vertical section under pressure may be supplied through a valve 15 showing roll-supporting cores engaged with the 30, herein shown as disposed in the plug I8 of the spindle; and inner shell, and finds its way through ports 32 to Fig. 3 is a section on the line 3 3 of Fig.y 2. the interior of the tube 26, permitting the latter Referring to the drawing, the spindle there to be inflated to the position shown in Figs. 2 and shown embodies an outer shell 6 adapted to re- 3. In the deflated position of the tube as shown 20 ceive a core 8 (Fig. 3) on which a roll of paper is in Fig. l, the latter iS Supported by the inner Shell to be wound. In Fig. l I have shown the right- I2 so that,as the plugs recede under gravity, as hand end of the spindle as supported in a bearindicated at the upper portion of Fig. l, they are ing l0 While from the other end thereof projects supported in such manner as to prevent the cylina trunnion, herein formed by the projecting end drical portions thereof from being displaced from 25 of an inner shell l2 supported within the shell the holes.

6 by rings I4 and closed at the ends by the plugs It will be understood that the core 8 is slipped i6 and I8, on over the spindle when the tube is deflated, as

The core 8, which, as seen in Figs. 2 and 3, is shown in Fig. 1, with the plugs either in the slightly greater infinternal diameter than shell 6. retracted position shown at the top portion of 30 in order to permit it to be slipped on and off the that ligure or in the unsupported position shown shell, is secured thereto by such `means as those at the bottom from which they may be easily disnow to be described. Herein the shell 6 is proplaced to permit the edge of the core to pass. vided with a multiplicity of radially extending When the tube 26 is inflated, the plugs are pressed holes 20 disposed in axial lines, the holes of adjaoutwardly, and their multiplicity and the ar- 35 cent lines being staggered, as best seen in the elerangement thereof provides for a uniform presvation of Fig. l. Thus, by way of example and sure against the inner wall of the core 8, supportwithout limitation thereto, ingthe case of a ing the latter and any roll of material thereon in spindle having holes disposed in a zone of the a truly central position and avoiding any distorshell forty-three inches in axial length (to accomtion of the core. This is of importance in order 40 modate a forty-two inch web), I may provide to provide for a uniform compact winding and for fourteen rows, as shown in Fig. 3, of holes one a uniform tension of material dispensed from or inch in diameter, disposed on centers spaced one led to the core since any distortion of its true and 2 quarter inches irl eeCll rOW and staggered cylindrical form or any eccentric or wobbling as shown in Fig. 1. LOOSely received in the 1011S motion thereof lwould result in a non-uniform 45 are radially extending Cylindrical plugs 22 Which tension on the Web and would disturb the proper may be molded IOm al Suitable DlaStiC and are relation of the elements of a series of operations provided with integral bases 24 at their inner ends preformed in sequence on the web'. Thus, if the within the shell. As best seen at the lower por- Web were being drawn through a perforating tion of Fig. l, the provision of these bases retains mechanism, the perforations would be unevenly 50 the plugs and the cylindrical portions thereof, spaced. being Of greater length than the thickness of the If the spindle is utilized in connection with a shells 6, permit the ends thereof to be projected slitter, instead of a single core a number of relaoutwardly to grip the core 8 as seen in Fig. 3. tively short cores may be disposed thereon, and The outer ends of the cylindrical portions 22 are in Fig. 2 I have shown one relatively short core 55 lll at the left and a portion of another immediately adjacent thereto at the right. The staggered relation of the plugs permits an effective grip to be exerted on cores of even such a small width as to correspond to the axial space between the centers of plugs in two adjacent rows, that is, half the width between centers of successive plugs in a single row.

By regulating the air pressure the grip on the core may be such as to permit slipping of the same under a predetermined tension, as is desirable in some applications.

I am aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive; reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

I claim:

l. A roll spindle comprising a cylindrical shell pierced substantially uniformly around its circurnference by axially extending rows of holes, members having radial portions received in the holes and enlarged bases within the shell, an inatable tube underlying the bases, and means limiting the collapse of the tube to prevent inward displacement of the members from the holes.

2. A roll spindle having an inner tubular shell, means for supplying compressed air thereto, an inflatable tube about the shell, the shell having ports to permit the passage of air to and from the tube, an outer shell enclosing the tube, and a multiplicity of members having radial portions traversing the outer shell in axial rows distributed substantially uniformly around its circumference and enlarged base portions opposing the tube.

3. A roll spindle comprising a shell piercedr substantially throughout its roll engaging surface with a multiplicity of holes arranged in closely spaced staggered relation, members having radially extending portions received in the holes, said portions having cylindrically curved outer ends and enlarged asymmetrical bases within the shell having closely opposed edges, and a pneumatic support within the shell contacting the bases.

4. A roll spindle comprising a cylindrical shell pierced substantially throughout its roll engaging surface with a multiplicity of holes arranged in closely spaced staggered relation, plugs loosely received in the holes and a pneumatic support for the plugs within the shell.

CHARLES A. MEISEL. 

